
soundcore
Boom 2
Loud, bassy beast; needs EQ, no aux.

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I have 3, and each has its own use case. Bose Sound Link Plus: loud uni-directional loud speaker. Good sound, very loud in one direction, fairly durable, good battery. I slapped a bunch of stickers on it and take it to protests and such. Its heavy but easy to carry around with the rope handle. It's got some scratches from being dropped, but holds up pretty well. Marshel Middleton 2: great sounding multi-directional speaker. Great warm sound, decent battery. I use it for picnics and such. Not the most robust. Also looks cool as he'll. JBL Charge 6. Tough as nails, good sound, meh batteries. I get drunk and I drop things, and thing is a survivor. Multiple drops on to concrete and you can't even see any damage. Great for the beach.
People love the charge 6 the most from this lineup - its damn loud for the size. Personally im swapping mine for a bose soundlink plus but thats a lil more expensive. The soundlink flex 2 is a good option for you too though
Check out the Bose Soundlink Plus, Amazon has them on sale for $199 right now. I've had mine for a few months now and love it, its a little heavy but the sound quality and battery like make up for it
Tied between the Bose Sounlink Plus and Brane X. The Brane just has some incredible power but the Bose sounds great and has been awesome to take out to games
I think you should go with the Bose if portability is an issue. I have not heard the max, but own a link plus. I really like the plus, and the max is an upgrade from that.
Soundlink Micro gen 2, Soundlink Flex gen 2, Soundlink Plus, and Soundlink Max, these are all waterproof and dustproof. If you're looking for something small and portable, the Micro and Flex would be my recommendation. If your focus is more on sound quality, you could consider the Plus and the Max. Personally I'd recommend the Flex or Max for shower use.
The Bose does have great clarity. The Marshall brand seems really good too.
A few people have liked 2 Soundcore Motion 300 paired together. A cylinder speaker like the Tribit Stormbox 2, JBL flip or Charge, UE Boom 4 are solid. The Bose Speakers do have great sound quality. So, Flex or Bose SoundLink plus are good ones.

soundcore
Boom 2
Loud, bassy beast; needs EQ, no aux.

Bose
SoundLink Flex Series
Durable, compact, good for size; distorts at high volume.

Minirig
Minirig 4
Unrivaled sound, long battery; pricey, flaky Bluetooth.

soundcore
Motion+
Best value, excellent sound with EQ; needs EQ.

JBL
Charge 6
Durable, portable, clear bass; dull vocals, distorts up close.

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Anker - Select 4 Go

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Harman Kardon - Go + Play 3

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LG Electronics - XBOOM Grab

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soundcore - Boom 3i

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JBL - Boombox 4

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Anker - Select 4 Go